Measurement of the branching ratios {gamma}(D{sub s}*{sup +}{yields}D{sub s}{sup +}{pi}{sup 0})/{gamma}(D{sub s}*{sup +}{yields}D{sub s}{sup +}{gamma}) and {gamma}(D*{sup 0}{yields}D{sup 0}{pi}{sup 0})/{gamma}(D*{sup 0}{yields}D{sup 0}{gamma})

Journal Article · Tue Nov 01 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.091101· OSTI ID:20713797

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A; Pappagallo, M; Pompili, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I ^[5]

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1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. University of Bergen, Inst. of Physics, N-5007 Bergen (Norway); and others

Data samples corresponding to the isospin-violating decay D{sub s}*{sup +}{yields}D{sub s}{sup +}{pi}{sup 0} and the decays D{sub s}*{sup +}{yields}D{sub s}{sup +}{gamma}, D*{sup 0}{yields}D{sup 0}{pi}{sup 0} and D*{sup 0}{yields}D{sup 0}{gamma} are reconstructed using 90.4 fb{sup -1} of data recorded by the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider. The following branching ratios are extracted: {gamma}(D{sub s}*{sup +}{yields}D{sub s}{sup +}{pi}{sup 0})/{gamma}(D{sub s}*{sup +}{yields}D{sub s}{sup +}{gamma})=0.062{+-}0.005(= stat.){+-}0.006(syst.) and {gamma}(D*{sup 0}{yields}D{sup 0}{pi}{sup 0})/{gamma}(D*{sup 0}{yields}D{sup 0}{gamma})=1.74{+-}0.02(stat.){+-}= 0.13(syst.). Both measurements represent significant improvements over present world averages.

• OSTI ID: 20713797
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 9; Other Information: DOI: 10.1103/PhysRevD.72.091101; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). BABAR Collaboration; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BRANCHING RATIO
D MESONS
D S MESONS
D*-2010 MESONS
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
ISOSPIN
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PHOTONS
PIONS NEUTRAL